#include <WiFi.h>
#include <HTTPClient.h>
#include <DHT.h>

const char* ssid = "Wokwi-GUEST"; // Simulated SSID in Wokwi
const char* password = ""; // No password for simulated WiFi

const char* serverName = "http://soufiane-arduino.000webhostapp.com/dht/rest_api.php";
const char* infobipApiUrl = "https://xl8n1l.api.infobip.com/sms/2/text/advanced"; // Infobip SMS API URL
const char* infobipApiKey = "073aa53348374e76e1d348bf747e79c8-78009172-1923-4828-b6c7-bcb8ec314656"; // Replace with your Infobip API key
const char* sender = "Arduino"; // SMS sender name
const char* recipient = "213549660362"; // Replace with the recipient's phone number

#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  
  // Connect to WiFi
  Serial.print("Connecting to WiFi...");
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println("Connected to WiFi");
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    float temperature = dht.readTemperature();
    float humidity = dht.readHumidity();

    if (isnan(temperature) || isnan(humidity)) {
      Serial.println("Failed to read from DHT sensor!");
      return;
    }

    // Send temperature and humidity data to server
    HTTPClient http;
    http.begin(serverName);
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");

    String httpRequestData = "temperature=" + String(temperature) + "&humidity=" + String(humidity);
    int httpResponseCode = http.POST(httpRequestData);

    if (httpResponseCode > 0) {
      String response = http.getString();
      Serial.println(httpResponseCode);
      Serial.println(response);
    } else {
      Serial.print("Error sending HTTP request. Response code: ");
      Serial.println(httpResponseCode);
    }

    http.end();

    // Check if temperature exceeds 70 and send SMS alert
    if (temperature > 70) {
      sendSMSAlert(temperature, humidity);
    }
  } else {
    Serial.println("WiFi not connected");
  }

  delay(10000); // Send data every 10 seconds
}

void sendSMSAlert(float temperature, float humidity) {
  HTTPClient http;
  http.begin(infobipApiUrl);
  http.addHeader("Content-Type", "application/json");
  http.addHeader("Authorization", "App " + String(infobipApiKey));

  String message = "Alert! Temperature: " + String(temperature) + "°C, Humidity: " + String(humidity) + "%";
  String jsonPayload = "{\"messages\":[{\"from\":\"" + String(sender) + "\",\"destinations\":[{\"to\":\"" + String(recipient) + "\"}],\"text\":\"" + message + "\"}]}";

  Serial.println("Sending SMS alert...");
  Serial.println("Payload: " + jsonPayload);

  int httpResponseCode = http.POST(jsonPayload);

  if (httpResponseCode > 0) {
    String response = http.getString();
    Serial.println("SMS sent successfully.");
    Serial.println(response);
  } else {
    Serial.print("Error sending SMS. Response code: ");
    Serial.println(httpResponseCode);
    Serial.println(http.errorToString(httpResponseCode).c_str());
  }

  http.end();
}